After the First World War the company built an improved version of the M-T, the M-T-2, powered by a 20 hp Meteor engine. The 1926 M-T-2, or SP-1, was of plywood construction and sold for $1,165.

By Irwin’s estimate about 40 were sold, including N2616, plus an unrecorded number sold as kits for $350, including N579M, N3685, and N7788, less motor (the Meteormotor went for $625). One of the world’s first successful small, personal airplanes.

Engine: Irwin Meteormotor, 25hp
Wing span: 14’0″
Length: 12’0″
Useful load: 175 lb
Max speed: 85 mph
Cruise speed: 75 mph
Stall: 24 mph
Range: 200 mi
Seats: 1

The Ireland Meteor is often refered to as the Curtiss-Ireland Meteor.

The Ireland Meteor, often referred to as the Curtiss-Ireland Meteor, was created by G. Sumner Ireland, who worked as a salesman for the Curtiss company.

With wings in production and the supply of Curtiss Oriole fuselages ended, G. Sunner Ireland created a new fuselage. Seating was for four in tandem open cockpits, each seating two side by side.
The Meteor never received a US Doc Type Certificate.
At least eight Meteors were built.

Engine: OX-5

G. S. Ireland founded his company to manufacture an aircraft known as the Ireland Comet, which combined surplus-Curtiss Oriole fuselages with new wings and tail unit.
With the closure of the Curtiss Oriole production line, a number of completed fuselages became available and Ireland was able to obtain them. With help from friends in the Curtiss design office new wings were created. These had a deeper rib section, and single bay bracing. Following initial flights in 1925, some 40 of these Comets are thought to have been produced before the fuselages ran out.

Karlis Irbitis is one of the pioneers of the aircrafts design in Latvia. In his early years Latvia was part of the Russia and he had chance to see some of the Russians war machines of French origins. His early attempt to build aircraft failed when his Nieuport replica crashed so he turned his interest to other models.

Designed by Jericho, Vermont dentist Dr. Dane Hurlburt and said to have been built in Lucerne, Switzerland, but flown in his native USA. A box-kite biplane with laterally-placed wings (wings rotated at 90 degrees to the direction of flight), Hurlburt’s aeroplane was powered by one 25 hp Anzani three cylinder motor driving a five and one-half metre long shaft with pusher-tractor propellers of 2 metres diameter. Contrarily claimed by various sources to have achieved several flights (notably on September 21, 1909 at Lucerne), as well as to have never been flown at all.